Quantity of Child Order gets provided false

[TryAnixx]

Hey guys,

i am setting a Order like that:

  const contract: Contract = {
    symbol: tranche.stockName,
    secType: SecType.STK,
    exchange: tranche.exchange,
    currency: tranche.currency,
  };

  // 2️⃣ Parent BUY Order
  const parentOrder: Order = {
    orderId: parentOrderId,
    action: OrderAction.BUY,
    totalQuantity: tranche.buyQuantity,
    orderType: OrderType.MKT,
    account: tranche.twsUnderAccount.capTraderSubAccountId,
    tif: 'GTC',
    transmit: false,
  };

  // 3️⃣ Take-Profit Order // Teilverkauf
  const investTenPercent = getInvestSum(historicalData, tranche) * 0.1;
  let sellQuantity = investTenPercent / tranche.takeProfit.toNumber();
  // **MUSS** ganzzahlig sein und mindestens 1
  sellQuantity = Math.max(1, Math.round(sellQuantity));
  console.log(
    `🔔 Calculated sell quantity for take-profit: ${sellQuantity} shares.`,
  );
  const takeProfit: Order = {
    orderId: takeProfitOrderId,
    action: OrderAction.SELL,
    parentId: parentOrderId,
    totalQuantity: sellQuantity,
    orderType: OrderType.LMT,
    // Limit-Preis leicht unter dem Take-Profit, um Ausführung zu erhöhen - 0.05%
    lmtPrice: tranche.takeProfit.toNumber() * (1 - 0.0005),
    account: tranche.twsUnderAccount.capTraderSubAccountId,
    tif: 'GTC',
    transmit: true,
  };

  // 5️⃣ Orders senden
  ib.placeOrder(parentOrderId, contract, parentOrder);
  ib.placeOrder(takeProfitOrderId, contract, takeProfit);

the Take Profit Order got a totalQuantity of 1 value...
But in the TWS it says 10 like my whole position (Buy Parent Order), when i remove the parentId its the one...

but i need a parent relation for that or is there any better approach?

thanks in advance....